玉米微孔淀粉的制备及显微结构研究.docxVIP

玉米微孔淀粉的制备及显微结构研究顾香玉 1 ，张晓云 2 ，刘景顺 3(1.江苏科技大学南徐学院，江苏 镇江212004；2.华东理工大学 生物反应器工程国家重点实验室，上海200237；3.河南工业大学粮油食品学院，河南 郑州450052)摘 要：以玉米淀粉为原料，研究比较了酶法及酸法水解处理玉米淀粉制备微孔淀粉工艺，并借助于扫描电子显微镜(scanning electron microscopes，SEM)、差式扫描量热计(differential scanning calorimeter，DSC)、动态热机械 分析(dynamic mechanical analysis，DMA)等分析手段对产品的显微结构及热相变过程进行了分析。关键词：微孔淀粉；酶解；酸解；DSC ；SEM ；DMA Preparationof CornMicroporousStarchandItsMicrostructureStudyGU Xiang-yu1，ZHANG Xiao-yun2，LIU Jing-shun3(1.Nanxu College, Jiangsu University of Science and Technology, Zhenjiang212004, China；2.State KeyLaboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai200237,China；3.Grain College, Henan University of Technology, Zhengzhou450052, China)Abstract：Microporousstarchgranuleswerepreparedbythepartialhydrolysisofnativecornstarchwithα-amylaseandHCl.ByobservingtheDSCpicturesofmicroporousstarchgranulesmodifiedbyα-amylaseandHCl,poresinthenativecornstarch granules hydrolyzedbyα-amylaseappearedmuchbetterthanthosemodifiedbyHClalone.Thetemperatureofphasetransition and surface structure of microporous starch granules were also studied with the aid of DSC, SEM and DMA analysis.Key words：microporous starch；α-amylase hydrolysis；acid hydrolysis；DSC(differential scamning calorimeter)； SEM(scanning electron microscopes)；DMA(dynamic mechanical analysis)中图分类号：TS236.9文献标识码：A文章编号：1002-6630(2006)12-0241-05收稿日期：2005-09-06作者简介：顾香玉(1974-) ，男，讲师，硕士，研究方向为食品资源开发与利用。[3]李淑芬, 宋慧婷, 田松江. 超临界CO2萃取当归及川芎研究[A]. 第三届全国超临界流体技术学术及应用研讨会论文集[C]. 西安, 2000. Nykanen I, Nykanen L, Alkio M. Composition of angelica root oilsobtained by supercritical CO2 extractionandsteamdistillation[J].JEssent Oil Res, 1991, (3): 229-236.马海乐. 生物资源的超临界流体萃取[M]. 合肥: 安徽科学技术出版 社,2000. KingJW.Fundamentalsandapplicationsofsupercriticalfluidextrac- tion in chromatographic science[J]. J Chrematogr Sci, 1989, 27: 355-363.陈维扭. 传递过程与单元操作[M]. 杭州: 浙江大学出版社, 1993. 166-169.Fedor R F. A method for estimating both the solubility parameters and molar volumes of liquids[